From: Minchan Kim <minchan@kernel.org>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/4] zsmalloc: zsmalloc: align cache line size
Date: Mon, 14 May 2012 10:55:16 +0900 [thread overview]
Message-ID: <4FB06604.5060608@kernel.org> (raw)
In-Reply-To: <20120511190643.GB3785@phenom.dumpdata.com>
On 05/12/2012 04:06 AM, Konrad Rzeszutek Wilk wrote:
>>>> 1. zs_handle zs_malloc(size_t size, gfp_t flags) - share a pool by many subsystem(like kmalloc)
>>>> 2. zs_handle zs_malloc_pool(struct zs_pool *pool, size_t size) - use own pool(like kmem_cache_alloc)
>>>>
>>>> Any thoughts?
>>>
>>> I don't have any objections to adding this kind of
>>> capability to zsmalloc. But since we are just speculating
>>> that this capability would be used by some future
>>> kernel subsystem, isn't it normal kernel protocol for
>>> this new capability NOT to be added until that future
>>> kernel subsystem creates a need for it.
>>
>>
>> Now zram makes pool per block device and a embedded system may use zram
>> for several block device, ex) swap device, several compressed tmpfs
>> In such case, share pool is better than private pool because embedded system
>> don't mount/umount frequently on such directories since booting.
>>
>>>
>>> As I said in reply to the other thread, there is missing
>>> functionality in zsmalloc that is making it difficult for
>>> it to be used by zcache. It would be good if Seth
>>> and Nitin (and any other kernel developers) would work
>>
>>
>> So, if you guys post TODO list, it helps fix the direction.
>>
>>> on those issues before adding capabilities for non-existent
>>> future users of zsmalloc.
>>
>>
>> I think it's not urgent than zs_handle mess.
>
> I am having a hard time parsing that. Are you saying that
> this is not as important as the zs_handle fixup? I think
> that is what you meant, but what to make sure.
Yes. I think zs_hande fixup is top priority for me than any other stuff I pointed out.
>
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--
Kind regards,
Minchan Kim
next prev parent reply other threads:[~2012-05-14 1:54 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-03 6:40 [PATCH 1/4] zsmalloc: rename zspage_order with zspage_pages Minchan Kim
2012-05-03 6:40 ` [PATCH 2/4] zsmalloc: add/fix function comment Minchan Kim
2012-05-03 13:19 ` Nitin Gupta
2012-05-03 6:40 ` [PATCH 3/4] zsmalloc use zs_handle instead of void * Minchan Kim
2012-05-03 13:32 ` Nitin Gupta
2012-05-03 15:23 ` Seth Jennings
2012-05-04 2:24 ` Minchan Kim
2012-05-07 15:01 ` Seth Jennings
2012-05-09 20:19 ` Greg Kroah-Hartman
2012-05-10 2:03 ` Minchan Kim
2012-05-10 14:02 ` Konrad Rzeszutek Wilk
2012-05-10 14:12 ` Greg Kroah-Hartman
2012-05-10 14:47 ` Nitin Gupta
2012-05-10 15:00 ` Minchan Kim
2012-05-10 15:11 ` Seth Jennings
2012-05-10 15:19 ` Minchan Kim
2012-05-10 15:19 ` Greg Kroah-Hartman
2012-05-10 16:29 ` Nitin Gupta
2012-05-10 16:44 ` Greg Kroah-Hartman
2012-05-10 17:24 ` Nitin Gupta
2012-05-10 17:33 ` Konrad Rzeszutek Wilk
2012-05-10 23:24 ` Minchan Kim
2012-05-10 23:50 ` Dan Magenheimer
2012-05-11 0:14 ` Minchan Kim
2012-05-11 16:31 ` Dan Magenheimer
2012-05-11 19:29 ` Konrad Rzeszutek Wilk
2012-05-11 21:49 ` Seth Jennings
2012-05-14 2:26 ` Minchan Kim
2012-05-11 19:28 ` Konrad Rzeszutek Wilk
2012-05-14 2:18 ` Minchan Kim
2012-05-15 1:57 ` Nitin Gupta
2012-05-15 2:21 ` Minchan Kim
2012-05-15 15:04 ` Konrad Rzeszutek Wilk
2012-05-16 1:36 ` Minchan Kim
2012-05-16 11:06 ` Konrad Rzeszutek Wilk
2012-05-03 6:40 ` [PATCH 4/4] zsmalloc: zsmalloc: align cache line size Minchan Kim
2012-05-03 13:58 ` Nitin Gupta
2012-05-04 2:27 ` Minchan Kim
2012-05-07 7:41 ` Pekka Enberg
2012-05-07 12:40 ` Nitin Gupta
2012-05-08 1:34 ` Minchan Kim
2012-05-08 14:00 ` Dan Magenheimer
2012-05-09 0:58 ` Minchan Kim
2012-05-09 3:08 ` Dan Magenheimer
2012-05-09 4:07 ` Minchan Kim
2012-05-11 0:03 ` Dan Magenheimer
2012-05-11 0:25 ` Minchan Kim
2012-05-11 19:06 ` Konrad Rzeszutek Wilk
2012-05-14 1:55 ` Minchan Kim [this message]
2012-05-15 15:18 ` Konrad Rzeszutek Wilk
2012-05-16 1:44 ` Minchan Kim
2012-05-03 13:18 ` [PATCH 1/4] zsmalloc: rename zspage_order with zspage_pages Nitin Gupta
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